How I Used Swarm Intelligence to Catch a Race...

Set a breakpoint. The bug disappears. Run it in staging. Nothing. Deploy to prod. It's back. Welcome to Heisenbugs — the category of bug that knows when you're watching. The Problem With Conventional Testing Unit tests run in isolation under zero concurrency. Integration tests exercise services sequentially, collapsing the timing window for race conditions to effectively zero. End-to-end tests validate happy paths through single-threaded execution. None of them replicate the conditions where Hei